(19)

(11)

EP 2 807 355 A1

(12)

(43) Date of publication: 03.12.2014 Bulletin 2014/49 (21) Application number: 13740986.8 (22) Date of filing: 17.01.2013

(51) International Patent Classification (IPC):  F02B 53/00(2006.01) F02B 55/08(2006.01) F02B 53/04(2006.01) F02B 55/02(2006.01) F02B 53/10(2006.01) (86) International application number: PCT/US2013/021875 (87) International publication number: WO 2013/112347 (01.08.2013 Gazette 2013/31)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 24.01.2012 US 201213357108 (71) Applicant: Wisconsin Alumni Research Foundation Madison, WI 53726 (US)	(72) Inventors: REITZ, Rolf, Deneys Madison, WI 53705 (US) KOKJOHN, Sage, L. Fitchburg, WI 53711 (US) (74) Representative: Williams Powell  11 Staple Inn London WC1V 7QH London WC1V 7QH (GB)